OH BBMOM...best of luck with the MRI...maybe it wont be worst case scenerio. Your son is the same age as mine. He is also a freshman in college and will have to red shirt this season and hopefully will be ready this time next year. No summer ball either he will just work with his pitching coach and come back slowly over the fall and winter next year giving him about 18 months before he gets back on the mound in real games. He will start throwing off the mound at 50 percent right around the time his team will leave for their 1st preseason trip. The rehab road back is not easy and a little lonely, but hopefully he will make it all the way back for the next season. Best Wishes to you and your son. Keep us posted.